3a - WAN Technologies

Question 1

A collection of networks under a common administration which shares a common routing strategy.

Answer 1

Autonomous system

Question 2

Routers that perform routing protocol functions between machines, networks, and within or between autonomous systems.

Answer 2

Gateways

Question 3

Routers that facilitate information exchange within an autonomous system;
Discovers paths between networks that are part of the same AS.

Answer 3

Interior Gateways;
Interior Gateway Protocols

Question 4

Routers that move information between autonomous systems.

Answer 4

Exterior Gateways

Question 5

Discovers paths between autonomous systems, which are also known as routing domains.

Answer 5

Exterior Gateway Protocols (EGP)

Question 6

An IP address on a layer 3 network device that serves as an access point to or from a network.

Answer 6

Default gateway (router port)

Question 7

Creates an encrypted tunnel from one computer or remote network to a private network through the internet;
Encrypts and Decrypts data.

Answer 7

VPN
Virtual Private Network

Question 8

Primary function of a router

Answer 8

To connect one LAN segment to another LAN segment within a routing domain.

Question 9

Breaking the network into subnets allows for _______

Answer 9

More efficient use of the address space
Improves overall LAN performance
Improves security

Question 10

Network layer protocols that are responsible for path determination and traffic switching.

Answer 10

Routing protocols

Question 11

Also known as Network Protocols;
Protocols within a protocol suite that are responsible for providing the logical addressing that routers use to determine where to send the data packet on its way to the destination network.

Answer 11

Routed protocols

Question 12

Routed protocols happen in which layers of the OSI model?

Answer 12

Network, Transport, Session, Presentation, and Application

Question 13

Difference between routing and routed protocols

Answer 13

Routing protocols build routing tables
Routed protocols encapsulate data so it could be sent over the network.

Question 14

The world’s most popular open-system (nonproprietary) protocol suite.

Answer 14

TCP/IP

Question 15

A network-layer (layer 3) protocol that contains addressing information and some control information that enables packet routing.

Answer 15

Internet Protocol (IP)

Question 16

A cisco proprietary protocol and is an advanced distance-vector routing protocol.

Answer 16

EIGRP

Question 17

The exterior gateway protocol that the internet uses

Answer 17

BGP

Question 18

Routes are established by the network administrator and do not change until the network administrator changes them.

Answer 18

Static routing

Question 19

Calls for automatic route calculations at regular intervals by software in routing devices.

Answer 19

Dynamic routing

Question 20

Generates several kinds of useful messages, including Destination Unreachable, Time Exceeded, Router Advertisement, Router Solicitation, and Echo-Request & Echo Reply.

Answer 20

ICMP
Internet Control Message Protocol

Question 21

A routed Interface that represents a set of bridged Ethernet Interfaces.

Answer 21

BVI
Bridge Virtual Interfaces

Question 22

Serial communications circuit components

Answer 22

End device(s), routers, modems, and media

Question 23

An end device that converts user information into signals or reconverts received signals into user information.

Answer 23

Data Terminal Equipment
DTE

Question 24

The equipment that performs functions such as signal conversion, signal coding, and provides timing for synchronization.

Answer 24

Data Communications Equipment
DCE